I know you guys have your hands in Freestyle...

Can you get Fortnite Save The World on the compatible list please?

Also, according to this post, you can force Freestyle to work in most games. I have had no luck with Fortnite STW.

Should I start deleting my posts now?

The 391.01 driver broke Freestyle but the 391.05 hotfix driver restored it again, far as game support goes it seems to work just from a few flags set in NVIDIA Inspector from the tutorials I've read about enabling it though I do not know how compatible it is since it's less configurable.
(Depth settings in particular what with logarithmic, reversed and flipped options and I'm guessing online games still don't have depth at all if you use effects requiring this in order to make cheating less of a problem online via use of certain effects.)

JBeckman wrote: The 391.01 driver broke Freestyle but the 391.05 hotfix driver restored it again, far as game support goes it seems to work just from a few flags set in NVIDIA Inspector from the tutorials I've read about enabling it though I do not know how compatible it is since it's less configurable.
(Depth settings in particular what with logarithmic, reversed and flipped options and I'm guessing online games still don't have depth at all if you use effects requiring this in order to make cheating less of a problem online via use of certain effects.)

Installed 391.05 hotfix yesterday and no change. Inspector is still missing the appropriate flag. And the Alt F3 option is completely gone from Geforce Experience.

There is no reason for Fortnite STW to not be on the compatibility list to begin with. It's enabled on Mac. WTF?

I sure as hell can't believe it's some technical hurdle these guys can't overcome with swiftness.